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The City of Portland, Oregon

Portland Water Bureau

From forest to faucet, we deliver the best drinking water in the world.

Customer Service: 503-823-7770


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How to check a toilet for leaks

Toilets leak more than any other water-using item in the home, and they can be costly!

Save water and money by checking your toilets for leaks. Click on the video below.

Toilet leak repair video 

How to check for toilet leaks:

  • Lift of the toilet tank lid.
  • Place 1 dye tablet or 10 drops of food coloring in the toilet tank.
  • Do not flush.
  • Wait 15 minutes (or more) without flushing.
  • Check the water in the bowl of the tank.  If color appears in the bowl, the toilet has a leak.